TW200426484A - An active matrix liquid crystal display - Google Patents

Abstract

An active matrix liquid crystal display includes a first substrate, a second substrate opposited to the first substrate, a liquid crystal layer between the two substrates, at least an alignment layer between the two substrates, a plurality of common electrodes and pixel electordes arranged on the second substrate, an insulator layer disposed on one side of the second substrate closed to the liquid crystal layer, and a passivation layer formed on one side of the insulator layer closed to the liquid crystal layer. The common electordes and pixel electordes are formed on the same layer of the second substrate at intervals.

Description

200426484

[Technical field to which the invention belongs] In particular, the invention relates to an active device. The present invention relates to a liquid crystal display-type matrix liquid crystal display. w [Prior art ~] The liquid crystal in the liquid crystal display panel itself does not have light-emitting characteristics. It is an electric field that controls the twisting of liquid crystal molecules to achieve the passage or non-passage of light. The substrate of the glass-breaking substrate: the surface forms an electrode to form an electric field that controls the twisting of liquid crystal molecules. The electrode uses a transparent material and the electrodes of the two substrates are opposite to each other to form an electric field perpendicular to the base surface. Because the liquid crystal molecules have dielectric anisotropy Under the control of this electric field, the orientation of liquid crystal molecules will be perpendicular to the substrate surface, but due to the interaction between liquid crystal molecules and the influence of physical forces such as gravity, the orientation of liquid crystal molecules cannot be completely perpendicular to The surface of the substrate affects the display effect of the liquid crystal display. As shown in the first and second figures, a rhyme-based liquid crystal display, the liquid crystal display 1 includes a first substrate and a second substrate 1 opposite to each other. The liquid crystal layer between the first substrate 11 and the second substrate i 2 Light polarizing devices with two substrates 12 and liquid crystal layer 17 on different sides and polarizing axes (Polar izing Axis) perpendicular to each other 丨 丨 and 1 2 0, a second substrate 1 2 adjacent to the liquid crystal layer 1 7 -The insulating layer 14 on the side, the common electrode 15 placed between the second substrate 12 and the insulating layer 14, and a passivation layer 1 provided on the insulating layer 14 adjacent to the liquid crystal layer 17 on the side, provided on the insulation The signal line 13 and the pixel electrode between the layer 14 and the passivation layer 100 are arranged on the passivation layer 100 adjacent to the liquid crystal layer 17 on the side of the alignment layer 10 and a pixel electrode.

Page 6 200426484 V. Description of the invention (2) Bottom 1 1 Color filter 1 9 adjacent to the liquid crystal layer 1 7-An alignment layer disposed on the color filter 19 and adjacent to the liquid crystal layer 17 101, wherein the common electrode 15 and the pixel electrode 16 are spaced from each other, the alignment layers 10 and 10 are used to control the initial alignment of the liquid crystal molecules 170, and the alignment layers 101 and 1 to 02 are aligned with each other. The orientation is the same as the polarization axis direction of the light polarization device 120. At least one of the first substrate 11 and the second substrate 12 is made of a transparent material, and the liquid crystal layer 17 is made of nematic (Nema tic) type liquid crystal, the liquid crystal display 1 realizes color display through a color filter 19.

Please refer to the first figure again, which is a schematic diagram of the working state of the liquid crystal display i when no voltage is applied. In this state, since no electric field is applied, the orientation of the liquid crystal molecules 170 is the same as that of the alignment layers 101 and 102, and the orientation of the alignment layers 101 and 102 is the same as that of the light polarization device 12o. The directions of the polarization axes are the same, so the linearly polarized light (not shown) entering the liquid crystal layer 17 through the polarization device i 2O can pass through the liquid crystal layer 17 without any change in the polarization state. The polarization directions of the polarized clothes 11 and 12 are perpendicular to each other, so the linearly polarized light cannot pass through the polarizing device 1 1 0, that is, the liquid crystal display 1 is in a dark state.

Please refer to the second figure again, which is a schematic diagram of the working state of the liquid crystal display 1 when a voltage is applied. The common electrode 5 and the pixel electrode 6 form an electric field 18 that is substantially parallel to the first substrate 11 and the second substrate 12. Since the liquid crystal molecules 1 70 have dielectric anisotropy and conductance anisotropy, they act in the electric field :: The orientation of the liquid crystal molecules 170 is consistent with the direction of the electric field 丨 8, but there is a certain angle between the direction of the electric field 18 and the polarization direction of the light polarizing device 12 ′, then the linear polarization through the polarizing device 120 When the light (not shown) reaches the liquid crystal molecules 170, birefringence will occur, so that the polarization state of the linearly polarized light will occur.

200426484 V. Description of the invention (3) The polarization axis directions of the polarization devices 110 and 120 are perpendicular to each other, so part of the linearly polarized light will pass through the light polarization device 11. The liquid crystal display 1 is bright. state. As mentioned above, this method of controlling the twisting of liquid crystal molecules using an electric field parallel to the substrate is called " In Plane Switching " (In Plane Switching, = s). Matrix liquid crystal display, and the liquid crystal display adopting this method has a wider viewing angle than traditional liquid crystal display devices. However, an insulation layer exists between the common electrode 15 and the liquid crystal layer, and a passivation layer, a passivation layer, and an alignment layer are included in the common electrode, and a passivation layer is present between the pixel electrode and the liquid crystal layer. It can be seen that the thickness of the common electrode 5 from the liquid crystal layer j 7 is different from the thickness of the pixel electrode 16 from the liquid crystal layer 17. Then, the common electrode 15 and the pixel electrode 16 pair the liquid crystal layer. The force of the charged particles in 17 is different. Since the liquid crystal layer 17 will adsorb charged particulate impurities in the surrounding environment, and during the driving process, the polarity of the common electrode 5 and the pixel electrode 6 will not be changed, and the driving time will increase, leaving residuals on the common electrode. The difference in the charged particles of $ 1 and the pixel electrode 16 will cause the strength of the electric field 18 formed between the common electrode 15 and the pixel electrode 16 to weaken, thereby generating a twisted liquid crystal molecule velocity under the action of the electric field If the number and quantity decrease, an image sticking phenomenon occurs, so the image display effect of the liquid crystal display 1 is not good. In view of this, it is necessary to provide a liquid crystal display with better image display effect. 》 '/ Suppress [Summary of the invention] The purpose of the present invention is to provide an active video display effect with better effect 200426484 V. Description of the invention (4) matrix-type liquid crystal display. 'Corresponding to the above object, the present invention provides an active matrix liquid crystal display, which includes a first substrate and a second substrate disposed oppositely, a liquid crystal layer disposed between an m-bottom and a second substrate,' at least- Alignment ㉟ disposed between the second substrate, a total π: prime electrode disposed on the second substrate, an insulating layer disposed on the second substrate adjacent to the liquid crystal layer-side, and an insulating layer disposed on the insulating layer adjacent to the liquid crystal layer The passivation layer on one side is used in a vertical direction, and the electrode and the pixel electrode are arranged at a distance from each other on the same side of the second ▲: adjacent to the liquid crystal layer side.

"Previous technology" In the active matrix liquid crystal display of the present invention, electrodes and pixel electrodes are spaced from each other on the second beauty medium level. Therefore, the common electrode and the like However, when there are impurities of charged particles in the ¼ liquid crystal layer, the force of the mound and the pixel electrode on the charged particles is the same. ^ The polarity of the mound electrode changes with time ... As the driving force increases, the ▼ electric particles Does not gather on the common electrode or the pixel electrode-2, ϋ t, the image remains, so as to achieve a better image display effect. A first embodiment of the active matrix liquid crystal display of the present invention is shown in the second figure, the liquid crystal The display 2 includes a first substrate U and a second substrate 22, a liquid crystal layer 27 located between the first substrate 21 and the second substrate 22, and a second substrate 21 and a second substrate, respectively. Light polarizing devices 2 1 0 and 22 2 on different sides of layer 27 and polarization axes perpendicular to each other, an insulating layer 24 provided on the side of the second substrate 22 adjacent to the liquid crystal layer 27, provided on 200426484 V. Description of the invention ( 5) absolutely The edge layer 2 4 is a passivation layer 2 0 adjacent to one side of the liquid crystal layer, a signal line 2 disposed between the insulating layer 2 4, 3, and a common electrode 25 disposed on the passivation layer 2 0 adjacent to the liquid crystal layer 2 7-side and The pixel electrode 26, an alignment layer 202 disposed on the passivation layer 200 adjacent to the liquid crystal layer 27-side, an alignment layer 202, and a color filter 29 disposed on the first substrate 21 adjacent to the liquid crystal layer 27-side. The common electrode 25 and the pixel electrode 26 are arranged in parallel and spaced from each other. The common electrode 25 and the pixel electrode 26 form an electric field 28 parallel to the first substrate 21 and the second substrate 22. The alignment layer 202 is used to control the liquid crystal molecules 270. Initial orientation, and the orientation of the alignment layer 202 is the same as that of the polarization axis of the light polarizing device 220. At least one of the first substrate 21 and the second substrate 22 is made of a transparent material, the common electrode 25 and the pixel The electrodes 2 6 are made of ITO (Indium Tin Oxide) or metal conductive materials such as gold, silver and copper. The liquid crystal layer 2 7 is made of nematic liquid crystal. In addition, the liquid crystal display 2 is made of color Filter 2 9 to achieve color display ° As above The common electrode 25 and the pixel electrode 26 are arranged at a distance from each other on the side of the passivation layer 200 adjacent to the liquid crystal layer. Therefore, the distance between the common electrode 25 and the pixel electrode 26 and the liquid crystal layer 27 is equal. When there is a charged particle impurity in the layer 27, the common electrode 25 and the pixel electrode 26 have the same force on the charged particles, and the polarities of the common electrode 25 and the pixel electrode 26 change with time. With the increase of time, the charged particles will not collect on the side of the common electrode 25 or the pixel electrode 26, thereby preventing image sticking. The second embodiment of the active matrix liquid crystal display of the present invention is as described in the first embodiment.

200426484 V. Description of the invention (6) As shown in the fourth figure, the liquid crystal display 3 is compared with the display 2 described in the first embodiment. The liquid crystal display 3 is provided at the first attack. 7. The substrate 31 is adjacent to the liquid layer 37—the alignment layer 301 on the side replaces the alignment sound 2202 of the liquid crystal display 2 and is disposed between the first substrate 31 and the alignment layer 301 —% ^ 39, The arrangement of other components is the same as that of the liquid crystal display 2. For example, Uesugi / Si, the common electrode 35 and the pixel electrode 36 of the two liquid crystal displays 3 are adjacent to the liquid, so when there is a charged particle impurity in the liquid crystal layer 37 At this time, the magnitude of the force exerted on the charged particles by the mound 35 and the pixel electrode 36 varies with time. The polarity of the electrode common electrode 35 and the pixel electrode 36 changes with time. As the moving time increases, the charged particles will not collect on The common electrode, the electrode 36-side, prevents the occurrence of image retention. $, The liquid image sensor 3 realizes color display through the color filter 39. People say ~ not the first active matrix liquid crystal display of the present invention The three implementations shown in the fifth figure, the liquid crystal Compared with the liquid crystal display device 2 described in the first embodiment, the liquid crystal display device 4 further includes an alignment layer 4 () 1 disposed on the side adjacent to the liquid crystal layer 47 at 49. The liquid crystal display Cry 4 = The principle of image retention is the same as that of the liquid crystal display 2, and the liquid crystal device 4 can realize color display through the color filter 49.…, not = 'The active matrix liquid crystal display of the present invention is not as described in the formula, … The substrate can be made of glass or two: only the common electrode and the pixel electrode described above can be made of non-flat P, f P Μ, and ”— externally placed, the insulating layer can be made of insulating materials such as silicon or silicon nitride. & The common electric electrode may be provided on a side of the insulating layer adjacent to the liquid crystal layer and the like. Pixels In summary, the present invention has indeed met the requirements of the invention patent. According to the law 200426484 V. Invention Description (7), a patent application is filed. However, the above are only the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above embodiments. For example, those who are familiar with the technology of the present case, make equivalent modifications or changes based on the spirit of the present invention. Should be covered by the following patent applications

Page 12 Brief Description of the Drawings The first picture shows the location of a state-of-the-art local c-crystal display without electric motor. The picture shows the first picture, Γ. Partial schematic diagram The working state of the liquid crystal display when it is powered on is the main embodiment of the present invention, and it is a matrix LCD display of the first embodiment. The fourth figure is a partial schematic diagram of the present invention. Partial schematic diagram of working makeup $ =: type / night crystal display device in the second embodiment plus kh and gloom. The fifth figure is a partial schematic view of the working state of the active matrix liquid crystal display according to the third embodiment of the present invention when a voltage is applied. Description of r main component symbols] The first liquid crystal display liquid crystal layer common electrode insulation layer electric field alignment layer light polarization device base color filter 47 pixel electrode signal line passivation layer liquid crystal molecules, 301, 401 ^ 220 22, 31, 41 49 Status 第 13 页

Claims (1)

200426484 VI. Scope of patent application An active moment relative arrangement of the first one is located at the first at least one of the second, the second, the insulation, the common, and the common side of the same patent. In the patent, the one-sided 0-array liquid crystals are one-to-two, and they include: a substrate and a second substrate, a substrate and a -A, a liquid crystal layer between the substrate and the substrate, and a substrate and a flute.楗 ― Lei 7-based alignment layer for prostitutes on the substrate; electrodes and pixel electrodes for Mima Liu; two adjacent insulation layers on one side: 'passivation layer on one side of the sun-day layer; private electrodes and pixel electrodes are spaced apart from each other At this level of media. The active matrix liquid crystal described in Di Erwei $ 1_ The electrodes and pixel electrodes for the active matrix liquid crystal display and the pixel electrodes described in Item 1 adjacent to the insulating layer are disposed on the passivation layer. The active matrix type liquid crystal display described in item 1 of the active matrix type liquid crystal display described in Proximity Circumference is provided on the first substrate. The active matrix type liquid crystal display described in item 4 of the patent range of the adjacent liquid crystal layer further includes a color filter. Sheet, the color filter and the light sheet are arranged between the substrate and the alignment layer. The active rectangular automotive plastic liquid crystal display described in item 4 of the patent scope further includes an alignment layer, and the alignment layer is disposed on one side of the passivated liquid crystal layer. Page 14 200426484 6. Scope of patent application 7 · If you apply for a patent device, of which 8 · If you apply for a patent device at 9 · If device 摅 I 0 · If device II · If device is 12. If device system 1 3 · If device 14 · Ru Qi 1 5 · Ru Qi 16 · Ru, it applied for a patent for the first base, and applied for a patent for a light sheet adjacent to it, where the patent was applied for, where the range of the first layer to the range of the layer included the bottom proximity The step of the range includes the active matrix liquid crystal display described in the item of the liquid crystal layer range, the common power range, and the common power 1 item, which is disposed on the passivation layer adjacent to the liquid crystal layer side. The active matrix liquid crystal display according to item 7, a color filter, the color filter being provided on one side of the liquid crystal layer. The active matrix liquid crystal display according to item 8 has an alignment layer, and the alignment layer is disposed on the color side. The active matrix liquid crystal display electrode and the pixel electrode described in item 1 are arranged in parallel with each other. The active matrix liquid crystal display electrode and the pixel electrode described in 1 item are adopted; [T0 made of materials, applied for a patent, of which it is formed. Apply for a patent, in which the patent is applied, in which the patent is applied, in which the active matrix liquid crystal display common electrode and pixel electrode described in item 1 of the patent application scope of the transparent material use metal conductive materials to consume The active matrix liquid crystal display insulating layer is made of silicon oxide. The active matrix liquid crystal display described in Item 1 of Insularity is made of silicon nitride. In the active matrix liquid crystal display described in item 1, at least one of the first substrate and the second substrate is made. Active matrix liquid crystal display as described in range item 13 Page 15 200426484 Page 16